<template>
  <div>

    <!-- <div class="operation">
      <el-button type="primary" plain @click="handleAdd">新增</el-button>
      <el-button type="danger" plain @click="delBatch">批量删除</el-button>
    </div> -->

    <div class="table">
      <el-table :data="tableData" stripe @selection-change="handleSelectionChange">
        <el-table-column prop="titleName" width="280" label="题目名称" show-overflow-tooltip></el-table-column>
        <el-table-column prop="titleSource" label="题目来源" show-overflow-tooltip></el-table-column>
        <el-table-column prop="titleRequirement" label="功能要求"></el-table-column>
        <el-table-column prop="technicalRequirement" label="技术要求"></el-table-column>
        <el-table-column prop="teacherName" label="老师"></el-table-column>
        <!-- <el-table-column prop="majorId" label="面向专业"></el-table-column> -->
        <el-table-column prop="statusName" label="选题状态"></el-table-column>

        <el-table-column label="操作" width="180" align="center">
          <template v-slot="scope">
            <el-button plain type="primary" @click="handleSelect(scope.row)">选题</el-button>
            <el-button plain type="danger" @click=del(scope.row)>取消</el-button>
          </template>
        </el-table-column>
      </el-table>

      <div class="pagination">
        <el-pagination background @current-change="handleCurrentChange" :current-page="pageNum"
          :page-sizes="[5, 10, 20]" :page-size="pageSize" layout="total, prev, pager, next" :total="total">
        </el-pagination>
      </div>
    </div>


    <!-- <el-dialog title="信息" :visible.sync="fromVisible" width="40%" :close-on-click-modal="false" destroy-on-close>
      <el-form label-width="100px" style="padding-right: 50px" :model="form" :rules="rules" ref="formRef">
        <el-form-item prop="title" label="标题">
          <el-input v-model="form.title" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item prop="content" label="内容">
          <el-input type="textarea" :rows="5" v-model="form.content" autocomplete="off"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="fromVisible = false">取 消</el-button>
        <el-button type="primary" @click="save">确 定</el-button>
      </div>
    </el-dialog> -->

  </div>
</template>

<script>
export default {
  name: "Notice",
  data() {
    return {
      tableData: [],  // 所有的数据
      pageNum: 1,   // 当前的页码
      pageSize: 5,  // 每页显示的个数
      total: 0,
      title: null,
      fromVisible: false,
      form: {},
      user: JSON.parse(localStorage.getItem('user') || '{}'),
      rules: {
        title: [
          { required: true, message: '请输入标题', trigger: 'blur' },
        ],
        content: [
          { required: true, message: '请输入内容', trigger: 'blur' },
        ]
      },
      ids: []
    }
  },
  created() {
    this.load(1)
  },
  methods: {
    handleAdd() {   // 新增数据
      this.form = {}  // 新增数据的时候清空数据
      this.fromVisible = true   // 打开弹窗
    },
    // 选题
    handleSelect(row) {
      if (row.status == 0) {
        this.$message.error('该题目已被选题')
        return
      }
      this.$confirm(
        '确认选择该题目吗?',
        '警告',
        {
          confirmButtonText: '确认',
          cancelButtonText: '取消',
          type: 'warning',
        }).then(response => {
          // console.log(row)
          let user = JSON.parse(sessionStorage.getItem('user'))
          let param = {
            "userId": user.id,
            "titleId": row.id,
            "teacherId": row.teacherId,
            "status": 1
          }
          this.$request.post('/graduation/addStudentTopic', param).then(res => {
            if (res.code == 200) {
              this.$message.success('选题成功')
            } else if (res.code == 511) {
              this.$message.error(res.msg)
            }
            // 刷新页面
            this.load(1)
          }).catch(err => {
              this.$message.error('选题错误')
          })
        })
    },
    save() {   // 保存按钮触发的逻辑  它会触发新增或者更新
      this.$refs.formRef.validate((valid) => {
        if (valid) {
          this.$request({
            url: this.form.id ? '/notice/update' : '/notice/add',
            method: this.form.id ? 'PUT' : 'POST',
            data: this.form
          }).then(res => {
            if (res.code === '200') {  // 表示成功保存
              this.$message.success('保存成功')
              this.load(1)
              this.fromVisible = false
            } else {
              this.$message.error(res.msg)  // 弹出错误的信息
            }
          })
        }
      })
    },
    del(id) {   // 单个删除
      this.$confirm('您确定删除吗？', '确认删除', { type: "warning" }).then(response => {
        this.$request.delete('/notice/delete/' + id).then(res => {
          if (res.code === '200') {   // 表示操作成功
            this.$message.success('操作成功')
            this.load(1)
          } else {
            this.$message.error(res.msg)  // 弹出错误的信息
          }
        })
      }).catch(() => {
      })
    },
    handleSelectionChange(rows) {   // 当前选中的所有的行数据
      this.ids = rows.map(v => v.id)   //  [1,2]
    },
    delBatch() {   // 批量删除
      if (!this.ids.length) {
        this.$message.warning('请选择数据')
        return
      }
      this.$confirm('您确定批量删除这些数据吗？', '确认删除', { type: "warning" }).then(response => {
        this.$request.delete('/notice/delete/batch', { data: this.ids }).then(res => {
          if (res.code === '200') {   // 表示操作成功
            this.$message.success('操作成功')
            this.load(1)
          } else {
            this.$message.error(res.msg)  // 弹出错误的信息
          }
        })
      }).catch(() => {
      })
    },
    load(pageNum) {  // 分页查询
      if (pageNum) this.pageNum = pageNum
      this.$request.post('/graduation/getList', {
        pageNum: this.pageNum - 1,
        pageSize: this.pageSize,
      }).then(res => {
        if (res !== "token校验失败") {
          console.log(res);
          // 给status的每个元素改为中文的已选和未选
          res.data.records.forEach(v => {
            if (v.status === 0) {
              v.statusName = '已选'
            } else {
              v.statusName = '未选'
            }
          })
          this.tableData = res?.data.records
          this.total = res.data?.total
        } else {
          this.$message.error(res)
        }
      }).catch(err => {
        this.$message.error("err")
      })
    },
    reset() {
      this.title = null
      this.load(1)
    },
    handleCurrentChange(pageNum) {
      this.load(pageNum)
    },
  }
}
</script>

<style scoped></style>
